Abstract: Watershed landscape pattern change can induce the alteration of the community composition, structure, and function of river organisms. To study the responses of river organisms to this change is the focus of river ecology. This paper analyzed the ways that watershed landscape pattern change affects river organisms, summarized the research indicators, methods, and scales, and the main conclusions in previous studies. Some suggestions for future research about the choices of research indicators and scales and the arrangement of sampling points were proposed.

Key words: Land vegetative cover index, Image classification, Accuracy evaluation, RS detection, Landscape ecology